<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>后盾人</title>
  </head>
  <body></body>
  <script>
    let hd = {
      show() {
        console.log("后盾人");
      },
      render() {
        console.log("hd . render");
      }
    };
    console.log(hd);
    hd.__proto__.render = function() {
      console.log("向军");
    };
    hd.render();
  </script>
</html>
